Kate applied for a $10,000 scholarship to help her with university costs. The scholarship includes a requirement for an essay about someone who inspires them. Kate wrote a pretty great essay about Astra’s escape from Scientology while she was pregnant with Kate. It’s a great read and at the end, if you like, you can vote for Kate’s essay. The more votes she gets, the better chance she has at winning the scholarship. Winner’s are chosen from the top 10 entrants with the most votes and Kate currently is in the top 10. If she wins, she gets helps towards her college costs and her essay is posted on the Wyzant website for people to read for years to come. Please take a moment to vote to keep her in the top 10. The voting period ends May 1st and the winners will be notified in June. We will update the site with the results.
For the case of alpha decay, [...] the simple underlying mechanism is quantum mechanical tunneling through a potential barrier. You will find a simple explanation in any elementary quantum mechanics textbook; for example, Ohanion's Principles of Quantum Mechanics has a nice example of alpha decay on page 89. The fact that the process is probabilistic, and the exponential dependence on time, are straightforward consequences of quantum mechanics. (The time dependence is a case of "Fermi's golden rule" --- see, for example, page 292 of Ohanion.)
One hears this regret in talking to older gamers. “Of course gaming has interfered with any attempt to look for or do any serious work,” says Arturo, 29, who reckons he has spent 600 hours playing Kerbal Space Program, a space-flight simulator, and possibly more at Starcraft II, a strategy game. He doesn’t just miss the forgone income and opportunities; he could have been reading, he laments. But those hours are gone for ever. Between the game reviews and player tips, online forums for gamers are thick with discussions among those who worry their lives are passing them by but cannot find the will to put down their controllers.